The Planning System and Flood Risk Management - Offaly County ...

Glossary of TermsTermsDefinition45Appropriate flood riskassessmentBreach of defencesCatchmentCatchment Flood RiskAssessment andManagement Studies(CFRAMS)Climate changeCoastal erosionCoastal floodingConsequence of floodingConveyance functionA methodology to assess flood risk issues insufficient detail and to provide a quantitativeappraisal of flood hazard and potential risk to anexisting or proposed development, of itspotential impact on flood elsewhere and of theeffectiveness of any proposed measures.A structural failure at a flood defence allowingwater to flow through.The area that is drained by a river or artificialdrainage system.A catchment-based study involving anassessment of the risk (Flood Risk ManagementPlans, see FRMP below) of flooding in acatchment and the development of a strategy formanaging that risk in order to reduce adverseeffects on people, property and the environment.Long-term variations in global temperature andweather patterns, which occur both naturally andas a result of human activity, primarily throughgreenhouse gas emissions.The gradual wearing away of the coastlinethrough a combination of wave attack and, in thecase of coastal cliffs, slope processes (e.g. highgroundwater levels). This may include cliffinstability, where coastal processes result in theperiodic reactivation of landslide systems orpromote rock falls.Flooding from the sea which is caused by higherthan normal sea levels and/or high wavesresulting in the sea overflowing onto the land.Health, social, economic and environmentaleffects of flooding, some of which can beassessed in monetary terms, while other lesstangible impacts are more difficult to quantify.Consequences depend on the hazards associatedwith the flooding and the vulnerability ofreceptors.When a river overflows its banks, it continues toflow over the flood plain, conveying waterdown-stream, as well as storing water where theflood plain may be obstructed and releasing itslowly.Planning Guidelines